:Product: 20020524SGAS.txt
:Issued: 2002 May 24 0245 UTC
# Prepared jointly by the U.S. Dept. of Commerce, NOAA,
# Space Environment Center and the U.S. Air Force.
#
Joint USAF/NOAA Solar and Geophysical Activity Summary
SGAS Number 144 Issued at 0245Z on 24 May 2002
This report is compiled from data received at SWO on 23 May
A.  Energetic Events
Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
0911 0911 0912                       220
1602 1602 1602                       510
B.  Proton Events:  A greater than 10 MeV proton event continues in
progress. The event began at 22/1755 UTC, reached a maximum of 820
PFU at 23/1055 UTC and was at 18.5 PFU at the end of the day.
C.  Geomagnetic Activity Summary:  The geomagnetic field ranged from
quiet to severe storm levels. Two sudden impulses were observed: the
first at 1051 UTC measured 87 nT in Boulder and the second at 1545
UTC measured 26 nT in Boulder.
D.  Stratwarm:  None
E.  Daily Indices: (real-time preliminary/estimated values)
10 cm 180  SSN 229  Afr/Ap 045/054   X-ray Background B5.8
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 2.6e+08   GT 10 MeV 6.8e+06 p/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
Daily Electron Fluence
GT 2 MeV 1.20e+07 e/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
3 Hour K-indices:
Boulder 3 3 2 5 6 7 4 3 Planetary 3 3 2 5 7 7 5 3
F.  Comments:  None